JPS6172540A - Pallet of synthetic resin foamed and molded body and manufacture thereof - Google Patents

Pallet of synthetic resin foamed and molded body and manufacture thereof

Info

Publication number
JPS6172540A
JPS6172540A JP59194975A JP19497584A JPS6172540A JP S6172540 A JPS6172540 A JP S6172540A JP 59194975 A JP59194975 A JP 59194975A JP 19497584 A JP19497584 A JP 19497584A JP S6172540 A JPS6172540 A JP S6172540A
Authority
JP
Japan
Prior art keywords
pallet
synthetic resin
mold
fork
present
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.)
Granted
Application number
JP59194975A
Other languages
Japanese (ja)
Other versions
JPH0423631B2 (en
Inventor
Hiroyuki Akiyama
穐山　博之
Takashi Kubota
孝 久保田
Toru Yamaguchi
徹 山口
Masahiro Hashiba
橋場　正博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JSP Corp
Original Assignee
JSP Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JSP Corp filed Critical JSP Corp
Priority to JP59194975A priority Critical patent/JPS6172540A/en
Publication of JPS6172540A publication Critical patent/JPS6172540A/en
Publication of JPH0423631B2 publication Critical patent/JPH0423631B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D19/0004—Rigid pallets without side walls
    • B65D19/0053—Rigid pallets without side walls the load supporting surface being made of more than one element
    • B65D19/0055—Rigid pallets without side walls the load supporting surface being made of more than one element forming a continuous plane contact surface
    • B65D19/0067—Rigid pallets without side walls the load supporting surface being made of more than one element forming a continuous plane contact surface the base surface being made of more than one element
    • B65D19/0069—Rigid pallets without side walls the load supporting surface being made of more than one element forming a continuous plane contact surface the base surface being made of more than one element forming a continuous plane contact surface
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/14—Particular design of joint configurations particular design of the joint cross-sections the joint having the same thickness as the thickness of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/435—Making large sheets by joining smaller ones or strips together
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/725—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being hollow-walled or honeycombs
    • B29C66/7252—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being hollow-walled or honeycombs hollow-walled
    • B29C66/72523—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being hollow-walled or honeycombs hollow-walled multi-channelled or multi-tubular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D24/00—Producing articles with hollow walls
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/438—Joining sheets for making hollow-walled, channelled structures or multi-tubular articles
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/543—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles
    • 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
    • B29L2031/7178—Pallets
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00009—Materials
    • B65D2519/00014—Materials for the load supporting surface
    • B65D2519/00034—Plastic
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00009—Materials
    • B65D2519/00049—Materials for the base surface
    • B65D2519/00069—Plastic
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00283—Overall construction of the load supporting surface
    • B65D2519/00293—Overall construction of the load supporting surface made of more than one piece
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00313—Overall construction of the base surface
    • B65D2519/00323—Overall construction of the base surface made of more than one piece
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00313—Overall construction of the base surface
    • B65D2519/00328—Overall construction of the base surface shape of the contact surface of the base
    • B65D2519/00343—Overall construction of the base surface shape of the contact surface of the base contact surface being substantially in the form of a panel
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00547—Connections
    • B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
    • B65D2519/00557—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements
    • B65D2519/00567—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements mechanical connection, e.g. snap-fitted
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00547—Connections
    • B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
    • B65D2519/00572—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer with separate auxiliary element, e.g. screws, nails, bayonets
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00736—Details
    • B65D2519/00741—Dimensional aspects of the pallet
    • B65D2519/00761—Dimensional aspects of the pallet the surface being variable, e.g. extendable pallets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pallets (AREA)

Abstract

PURPOSE:To obtain the titled pallet that has enough strength, and is lightweight and excellent in cushioning force, by joining the longitudinal ends of a plurality of pallet members each comprising a foamed and molded body that is produced in a mold from synthetic resin prefoamed particles. CONSTITUTION:Synthetic resin prefoamed particles are foamed and molded in a mold into pallet members 1, 1', which should have a density of 0.045-0.3g/cm<3>, preferably 0.05-0.18g/cm<3>, and a compression strength of 2.0kg/cm<2> or over when compressed 20%. The longitudinal ends of the pallet members 1, 1' are joined to integrate the pallet members 1, 1' thereby producing joined sections 3 and fork finger insertion sections 2 into which fork fingers of a fork lift will be inserted.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、貨物をフォークリフト等で移送する際に載台
として使用する合成樹脂発泡成型体製パレット及びその
製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a pallet made of a synthetic resin foam molding used as a platform when transporting cargo by a forklift or the like, and a method for manufacturing the pallet.

（従来の技術） 従来、パレットは木製のものや金属製のものが多く利用
されており、近年、合成樹脂射出成形体製のパレットや
合成樹脂押出発泡体製のパレットも使用されるようにな
った。(Conventional technology) Traditionally, pallets have often been made of wood or metal, but in recent years pallets made of synthetic resin injection molded products and pallets made of synthetic resin extruded foam have also come into use. Ta.

また、実開昭５８−１４３３２２号公報、特開昭５８−
１７１３４２号公報及び特開昭５８−１７１３４３号公
報には、上板のパレット構成部材と下板のパレット構成
部材とを嵌合して得られるポリオレフィン系樹脂発泡粒
子の型内発泡成形体製のパレットが開示されている。Also, Japanese Utility Model Publication No. 58-143322, Japanese Unexamined Patent Publication No. 58-143322
171342 and JP-A-58-171343 disclose a pallet made of in-mold foam molded polyolefin resin foam particles obtained by fitting an upper pallet component and a lower pallet component. is disclosed.

（発明が解決しようとする問題点） パレットには十分な強度が求められる。このことから、
木製のパレットや金属製のパレットは太い枠材や厚い板
材が使用されており、パレット自体かなり重く、このた
め木製のパレットや金属製のパレットは作業性が悪（、
安全性にも欠ける欠点があった。また、木製パレットは
、ささくれや割れが発生し、貨物の損傷や作業者の怪我
等の原因になった。更に、木製のパレットには吸水性が
あるためにカビやバクテリア等の細菌が発生しやすく、
このことは食品業界や薬品業界ではとくに問題となって
いた。(Problem to be solved by the invention) The pallet is required to have sufficient strength. From this,
Wooden pallets and metal pallets use thick frame materials and thick board materials, and the pallets themselves are quite heavy.For this reason, wooden pallets and metal pallets have poor workability (,
It also had the drawback of lacking safety. In addition, wooden pallets were prone to hangnails and cracks, causing damage to cargo and injury to workers. Furthermore, since wooden pallets have water absorbing properties, bacteria such as mold and bacteria can easily grow on them.
This has been a particular problem in the food and pharmaceutical industries.

合成樹脂射出成型体製のパレットは、無発泡のものが多
く、硬＜、緩衝力が劣るため、ちょっとした衝撃で貨物
を傷つけてしまう欠点がある０合成樹脂押出発泡体製の
パレットは押出品特有の方向性のある“ストレス”があ
り、このことからパレットに反りが生じる欠点がある。Pallets made of synthetic resin injection molding are often non-foamed and have poor hardness and cushioning power, so they have the drawback of damaging the cargo with the slightest shock.Pallets made of synthetic resin extruded foam are unique to extruded products. There is a directional "stress" that causes the pallet to warp.

また、実開昭５８−１４．３３２２号公報、特開昭５８
−１７１３４２号公報及び特開昭５８−１７１３４３号
公報に開示されたパレットは各パレット構成部材をパレ
ットと同面積に成型する必要があり、パレット構成部材
の面積が大きく、大型の型内成形機を用いなければ製造
が不可能であり、経済的でない。Also, Japanese Utility Model Application Publication No. 58-14.3322, Japanese Unexamined Patent Application Publication No. 1983
The pallets disclosed in JP-A-171342 and JP-A-58-171343 require that each pallet component be molded to the same area as the pallet, and the area of the pallet component is large, requiring a large in-mold molding machine. Without it, production is impossible and uneconomical.

本発明は、上記した従来品の欠点を克服したパレットを
提供することを目的とする。すなわち、本発明は十分な
強度を有し、しかも軽量で緩衝力にも勝れ、吸水性がな
く、反りの生しることもない、作業性が良好で安全性に
も勝れた合成樹脂発泡成型体製パレットを提供すること
を目的とする。An object of the present invention is to provide a pallet that overcomes the drawbacks of the conventional products described above. In other words, the present invention provides a synthetic resin foam molded product that has sufficient strength, is lightweight, has excellent cushioning power, does not absorb water, does not warp, is easy to work with, and has excellent safety. The purpose is to provide manufactured pallets.

また、本発明は小型の型内成形機でも十分製造が可能で
ある合成樹脂発泡成型体のパレットの製造方法を提供す
ることを目的とする。Another object of the present invention is to provide a method for manufacturing a pallet of synthetic resin foam molding, which can be sufficiently manufactured using a small-sized in-mold molding machine.

（問題点を解決するための手段） 本発明者らは、上記の点に鑑み鋭意研究した結果、合成
樹脂予備発泡粒子の型内発泡成型体よりなる複数のパレ
ット構成部材の端部同士をパレットの幅方向に接合して
パレット構成部材相互を一体化してなる合成樹脂発泡成
型体製パレット及びその製造方法の開発に成功し本発明
を完成した。(Means for Solving the Problems) As a result of intensive research in view of the above points, the present inventors have found that the ends of a plurality of pallet component members made of in-mold foam molded articles of synthetic resin pre-expanded particles are connected to each other. The present invention has been completed by successfully developing a pallet made of a synthetic resin foam molded body in which pallet constituent members are joined in the width direction to integrate each other, and a method for manufacturing the same.

即ち本発明の合成樹脂発泡成型体製パレットは、合成樹
脂予備発泡粒子の型内発泡成型体よりなる２以上のパレ
ット構成部材を、該構成部材の端部同士をパレットの幅
方向に接合して一体化してなる構成を有する。又、本発
明の合成樹脂発泡成型体製パレットの製造方法は、合成
樹脂予備発泡粒子を成型用型に充填し、加熱発泡させて
パレットを２以上に分割した形状のパレット構成部材を
成型し、次いで２以上のパレット構成部材の端部同士を
パレットの幅方向に接合し、パレット構成部材相互を一
体化して所望の形状及び大きさを有するパレットを得る
方法である。That is, the pallet made of a synthetic resin foam molded product of the present invention is obtained by joining two or more pallet component members each made of an in-mold foam molded product of pre-expanded synthetic resin particles at the ends of the component members in the width direction of the pallet. It has an integrated configuration. In addition, the method for manufacturing a pallet made of a synthetic resin foam molded product of the present invention includes filling a mold with pre-expanded synthetic resin particles, heating and foaming them, and molding pallet constituent members in the shape of dividing the pallet into two or more parts. Next, the ends of two or more pallet structural members are joined together in the width direction of the pallet, and the pallet structural members are integrated with each other to obtain a pallet having a desired shape and size.

（実施例） 以下、本発明の実施例を図面に基き説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.

第２図、第４図、第６図及び第８図は、本発明のパレッ
トの一実施例を示す斜視図である。各々、１．１’はパ
レット構成部材、２はフォークリフトのフォークフィン
ガーを差し込もためのフォークフィンガー差込部、３は
接合部を示し、フォークフィンガー差込部２はパレット
の一方の側面から相対向する他方の側面まで連通して形
成されている。パレット構成部材ｋｌ’は合成樹脂予備
発泡粒子の型内発泡成型体より形成されるが、該発泡成
型体は、密度０．０４５〜０．３ｇ／　ｃｊ、特に密度
０．０５〜０．１８ｇ／ｃｊを存し、２５％圧縮時の圧
縮強度が２．０ｋｇ／ｃ＋７以上のものが十分な強度を
有し、軽量であり、緩衝力にも勝れるため好ましい、密
度が０．０４５ｇ／　ｃ＋ｊ未満では強度が不充分とな
り易く、密度が０．３ｇ／　ｃｄを越えるものは、重量
が重くなり過ぎ作業性が低下する盾れがある。又２５％
圧縮時の圧縮強度が２．０　ｋｇ／−未満のものも強度
が不充分となり易い。2, 4, 6, and 8 are perspective views showing one embodiment of the pallet of the present invention. In each case, 1.1' is a pallet component, 2 is a fork finger insertion part for inserting the fork fingers of a forklift, and 3 is a joint part, and the fork finger insertion part 2 is located opposite from one side of the pallet. It is formed so as to be connected to the other side facing the other side. The pallet component kl' is formed from an in-mold foam molded product of pre-expanded synthetic resin particles, and the foam molded product has a density of 0.045 to 0.3 g/cj, particularly a density of 0.05 to 0.18 g/cj. A material with a compressive strength of 2.0 kg/c+7 or more at 25% compression is preferable because it has sufficient strength, is lightweight, and has excellent cushioning power, and a density of less than 0.045 g/c+j. However, if the density exceeds 0.3 g/cd, the weight becomes too heavy and the workability decreases. Another 25%
Those whose compressive strength during compression is less than 2.0 kg/- also tend to have insufficient strength.

第１図は第２図のパレットの構成部材ｌを示す斜視図、
第３図は第４図のパレットの端部の構成部材ｌを示す斜
視図、第５図は第６図のバレットの端部の構成部材ｌを
示す斜視図、第７図は第８図のパレットの端部の構成部
材ｌを示す斜視図である。第９図及び第１０図は、各々
第２図、第４図に示すパレットの接合部を示す部分断面
図である。本発明のパレットは、２以上に分割したパレ
ット構成部材Ｉ、１′を用い、それらの端部同士をパレ
ットの幅方向に接合したものである。“パレットの幅方
向”に接合とは、第２図や第４図のようにフォークフィ
ンガー差込部２の形成方向に沿った方向に接合した場合
も、第６図のようにフォークフィンガー差込部２の形成
方向と直行する方向に接合した場合も共に含む。また、
第８図のようにフォークフィンガー差込部２の形成方向
に沿った方向及び直行する方向の両方向に接合した場合
も含む、“接合”とはパレットの構成部材の端部同士を
加熱融着または接着剤により接着する場合（例えば第９
図に示す如くパレット構成部材相互の接合面が平坦な場
合）、第１Ｏ図のように凹部分と凸部分とを噛み合わせ
ることにより嵌合する場合や、図示しないが楔形の凹部
分と凸部分とを噛み合わせることにより嵌合する場合等
のいずれであってもよい（第１０図の如き凹部分と凸部
分との噛み合わせによる場合や楔形の凹部分と凸部分と
の噛み合わせによる場合も単に嵌合されただけでなく、
加熱融着されていたり、接着剤により接着されていても
よい、）。FIG. 1 is a perspective view showing the constituent members l of the pallet shown in FIG. 2;
3 is a perspective view showing the component 1 at the end of the pallet in FIG. 4, FIG. 5 is a perspective view showing the component 1 at the end of the pallet in FIG. 6, and FIG. FIG. 3 is a perspective view showing the component l of the end of the pallet. FIGS. 9 and 10 are partial sectional views showing the joints of the pallets shown in FIGS. 2 and 4, respectively. The pallet of the present invention uses pallet component members I and 1' divided into two or more parts, and their ends are joined in the width direction of the pallet. Joining in the "width direction of the pallet" means joining in the direction along the formation direction of the fork finger insertion part 2 as shown in Figures 2 and 4, as well as the case where the fork finger insertion part 2 is joined as shown in Figure 6. This also includes cases where the parts are joined in a direction perpendicular to the direction in which the portion 2 is formed. Also,
As shown in Fig. 8, "joining" includes the case where the ends of the components of the pallet are joined by heat-fusion or When bonding with adhesive (for example, No. 9
(As shown in the figure, the mutual joint surfaces of the pallet components are flat), In the case where the mating surfaces of the pallet components are flat, as shown in Figure 1O, the fitting is done by interlocking the concave part and the convex part, or (not shown in the figure), the concave part and the convex part are wedge-shaped. (It may also be the case that the fitting is done by the engagement of the concave part and the convex part as shown in Fig. 10, or the engagement of the wedge-shaped concave part and the convex part.) Not only are they mated together, but
(It may be heat-sealed or bonded with an adhesive.)

本発明のパレットは、第２図、第４図及び第６図に示す
ような、フォークフィンガー差込部２を二条有する三方
差しパレットであってもよく、第８図に示すような、二
条一対の差込部２が互いに直角に交差する四条の差込部
２を有する四方差しパレットであってもよい、また、本
発明のパレットは、フォークフィンガーを三本以上有す
る特殊なフォークリフトに合わせ、三条以上の差込部を
設けてもよい。The pallet of the present invention may be a three-way pallet having two fork finger insertion portions 2 as shown in FIGS. 2, 4, and 6, or a pair of two fork finger insertion portions 2 as shown in FIG. The pallet of the present invention may be a four-way pallet having four insertion portions 2 intersecting each other at right angles.Also, the pallet of the present invention has three or more fork fingers. The above insertion portions may be provided.

本発明のパレットは、第２図、第６図及び第８図に示す
ように両面使用形パレットであってもよく、第４図に示
すように片面使用形パレットであってもよい。The pallet of the present invention may be a double-sided pallet, as shown in FIGS. 2, 6, and 8, or a single-sided pallet, as shown in FIG. 4.

本発明のパレットは、上記した他、用途に応した様々な
形状にしてもよい１例えば、貨物がパレットから滑り落
ちないように、パレットの表面角部に突起を設けてもよ
く、パレット表面に滑り度めの凹凸を形成してもよい。In addition to the above, the pallet of the present invention may have various shapes depending on the intended use.For example, protrusions may be provided at the corners of the pallet surface to prevent cargo from slipping off the pallet. It is also possible to form irregularities with a degree of slippage.

本発明におけるパレット構成部材は、ポリエチレン（低
密度ポリエチレン、直鎖低密度ポリエチレン及び高密度
ポリエチレン等）、ポリプロピレン、エチレン−プロピ
レンランダム共重合体、エチレン−プロピレンブロック
共重合体、エチレン−スチレン共重合体、エチレン−酢
酸ビニル共重合体等のオレフィン系樹脂、ポリスチレン
、スチレン−ブタジェン共重合体、スチレン−無水マレ
イン酸共重合体等のスチレン系樹脂、塩化ビニル系樹脂
等の合成樹脂の予備発泡粒子の型内発名成、型体からな
り、合成樹脂の予備発泡粒子は架橋されていてもよく、
無架橋であってもよい、これらのなかでは−°・フィン
系樹脂の予備発泡粒子を型内発泡成型したものが十分な
強靭性を有すると同時に柔軟性をも併せもち、耐衝撃性
に勝れ緩衝力も高く、最も好ましい。The pallet components in the present invention include polyethylene (low-density polyethylene, linear low-density polyethylene, high-density polyethylene, etc.), polypropylene, ethylene-propylene random copolymer, ethylene-propylene block copolymer, ethylene-styrene copolymer. , pre-expanded particles of olefin resins such as ethylene-vinyl acetate copolymers, styrene resins such as polystyrene, styrene-butadiene copolymers, styrene-maleic anhydride copolymers, and synthetic resins such as vinyl chloride resins. The pre-expanded synthetic resin particles may be cross-linked.
Among these, in-mold foam molding of pre-expanded particles of -°-fin type resin, which may be non-crosslinked, has sufficient toughness and flexibility, and is superior in impact resistance. It is most preferable because it has a high buffering force.

また、本発明のパレットを形成する合成樹脂予備発泡粒
子の型内発泡成型体にはカーボンブラック等の耐候性材
料や酸化防止剤、紫外線吸収剤等を混入せしめると、耐
候性の勝れたパレットとなり好ましい。Furthermore, if a weather-resistant material such as carbon black, an antioxidant, an ultraviolet absorber, etc. are mixed into the in-mold foam molded product of pre-expanded synthetic resin particles forming the pallet of the present invention, the pallet with excellent weather resistance can be obtained. It's preferable.

本発明のパレットは、補強具等を使用してパレットの強
度を上げてもよい０例えば、第１１図は第４図のＸＩ−
ＸＩ線線断断面図あり、第１２図は第２図のＸ１ｌ−Ｘ
ｌｌｌｌ線面断面図るが、各々補強具５と締結部６とを
使用している。上記補強具５には締結用のネジ溝が形成
されており、締結具６を補強具５に螺挿して締結してい
る。パレット構成部材には、例えば第１図、第３図に示
す構成部材１のようにまえもって補強具５の挿入穴４を
形成してもよいし、第６図や第１４図のパレットのよう
に補強へ５挿入用のｒｌｉｆｆｉ穴を後で形成してもよ
い、第２図、第４図、第６図に示すように接合部３と交
差する方向に挿入する場合に限らず、第８図に示すよう
に接合部３の位置に該接合部３に沿って挿入してもよく
、第１３図の実施例のように接合部３と交差する方向に
挿入し、且つ接合部３の位置に該接合部３に沿って挿入
してもよい、また、第１４図の実施例のように接合部３
と交差する方向に挿入し、且つ接合部３付近に該接合部
３と平行に挿入してもよい、あるいは、補強具５は、接
合部３と交差する方向のみ、接合部３の位置のみ、接合
部３付近に該接合部３と平行な方向のみに挿入してもよ
い、特に、補強具５を接合部３と交差する方向に挿入す
ると、パレットに対する補強効果が大となり、好ましい
、挿入する補強具５の数は、第１３図では７本であり、
第１４図では１１本であるが、適宜選択すればよい。The pallet of the present invention may use reinforcing tools to increase the strength of the pallet. For example, FIG.
There is a sectional view taken along the line XI, and Figure 12 is taken from X1l-X in Figure 2.
As shown in the cross-sectional view, a reinforcing device 5 and a fastening portion 6 are used in each case. A screw groove for fastening is formed in the reinforcing tool 5, and the fastening tool 6 is screwed into the reinforcing tool 5 to fasten the reinforcing tool 5. In the pallet component, insertion holes 4 for reinforcing tools 5 may be formed in advance, for example, as in the component 1 shown in FIGS. 1 and 3, or as in the pallet shown in FIGS. 6 and 14. The rliffi hole for insertion into the reinforcement 5 may be formed later, not only when inserting in the direction crossing the joint 3 as shown in FIGS. 2, 4, and 6, but also in the direction shown in FIG. It may be inserted along the joint part 3 at the joint part 3 as shown in FIG. It may be inserted along the joint 3, or the joint 3 may be inserted along the joint 3 as in the embodiment of FIG.
The reinforcing device 5 may be inserted in the direction crossing the joint 3 and parallel to the joint 3 near the joint 3, or the reinforcing device 5 may be inserted only in the direction crossing the joint 3, only at the position of the joint 3, The reinforcing device 5 may be inserted near the joint 3 only in a direction parallel to the joint 3. In particular, it is preferable to insert the reinforcing device 5 in a direction crossing the joint 3 because the reinforcing effect on the pallet becomes large. The number of reinforcing tools 5 is seven in FIG.
Although the number is 11 in FIG. 14, it may be selected as appropriate.

補強具５の形状はパイプ状でも棒状でもよく、補強具５
は、鉄、アルミニウム等の金属や強化プラスチ７り（Ｆ
　ＲＰ）等により形成されたものが適宜使用される。The reinforcing tool 5 may have a shape of a pipe or a rod.
metals such as iron and aluminum, and reinforced plastics (F).
RP) or the like is used as appropriate.

第１５図は、本発明のパレットの更に別な実施例を示す
斜視図である。このパレットはフォークフィンガー差込
部２の開口端縁側が保護カバー７で被覆されている。保
護カバー７は、第１６図に示すようにパレットの左右両
サイドの端縁部８を被覆しパレットが破ｔｎするのを防
ぎ、同時にフォークフィンガー差込部２の開口部２′と
、この開口部２′に近いフォークフィンガー差込部２の
一部も被覆し、作業時フォークフィンガーによりパレッ
トが破損されるのを防ぐ、また、保護カバー７はパレッ
ト全体の強度を上げる効果も有する。FIG. 15 is a perspective view showing still another embodiment of the pallet of the present invention. In this pallet, the opening edge side of the fork finger insertion portion 2 is covered with a protective cover 7. As shown in FIG. 16, the protective cover 7 covers the edge portions 8 on both the left and right sides of the pallet to prevent the pallet from being damaged, and at the same time protects the opening 2' of the fork finger insertion portion 2 and the opening 2' of the fork finger insertion portion 2. The protective cover 7 also covers a part of the fork finger insertion part 2 near the part 2' to prevent the pallet from being damaged by the fork fingers during operation, and also has the effect of increasing the strength of the entire pallet.

保護カバーは第１５図の形状のみに限らない１図示しな
いが、断面路り字型の保護カバーを２つ組み合わせて、
パレットの四周を被覆してもよく、第１５図のような形
状の嵌め込み式の保護カバーをパレットの四周に嵌め込
むことによりパレットの四周を被覆してもよい（フォー
クフィンガー差込部２の開口部２′のない側壁には差込
口のない保護カバーを使用する。）。The protective cover is not limited to the shape shown in FIG.
The four circumferences of the pallet may be covered, or the four circumferences of the pallet may be covered by fitting a protective cover of the shape shown in Fig. 15 around the four circumferences of the pallet. (Use a protective cover without an insertion hole on the side wall without section 2'.)

フォークフィンガー差込部２の内壁９は第１６図に示す
ように保護材１０により保護することが好ましい、この
保護材１０の形状は適宜選択することができ、フォーク
フィンガー差込部２の上下左右の内壁９の略全面を被覆
し得る断面方形状の長尺な中空形状のものが特に好まし
いが、上下左右の内壁９を部分的に被覆するものであっ
てもよい、また、フォークフィンガー差込部２内壁の天
井部等搬送時にフォークフィンガーと接触して特に破…
し易い要所に部分的に保護材を設けても良くこの場合に
は、保護材は例えば帯状物や、パイプや棒でもよい、パ
イプや棒の場合には、フォークフィンガー差込部２の天
井部に２本を一対として設け、これら２本のパイプや捧
の間隔はフォークフィンガーの幅より若干狭くするとよ
い。It is preferable that the inner wall 9 of the fork finger insertion part 2 is protected by a protective material 10 as shown in FIG. A long hollow shape with a rectangular cross section that can cover almost the entire surface of the inner wall 9 is particularly preferable, but it may partially cover the upper, lower, left, and right inner walls 9. Part 2 The ceiling of the inner wall, etc. may come in contact with the fork fingers during transportation and be particularly damaged.
A protective material may be provided partially at a key point where it is easy to do so. In this case, the protective material may be, for example, a strip, a pipe, or a rod. In the case of a pipe or a rod, the protective material may be provided on the ceiling of the fork finger insertion part 2. It is preferable that two pipes are provided as a pair in each section, and the distance between these two pipes or bars is slightly narrower than the width of the fork fingers.

第１７図は、第１６図の保護カバー７と保護材１０との
噛み合わせ部分を拡大した説明図である。FIG. 17 is an enlarged explanatory view of the engagement portion between the protective cover 7 and the protective material 10 in FIG. 16.

このように保護カバー７と保護材ＩＯ相互を係止して連
結することにより、保護カバー７と保護材ｌＯ両者が確
実にパレットに装着され、好ましい。By locking and connecting the protective cover 7 and the protective material IO in this way, both the protective cover 7 and the protective material IO can be reliably attached to the pallet, which is preferable.

第１８図は本発明のパレットの更に別な実施例を示す要
部斜視図である。このパレットは第２０図に示すように
パレットの端縁部８を被覆する端縁部保護カバー１１８
と差込口保護カバー１１ｂとが別体になっており、フォ
ークフィンガー差込部２の開口部２′及びその周辺は差
込口保護カバーｌｌｂにより被覆されている。この場合
、差込口保護カバー１１ｂと保護材１０．！−は第１７
図と同し噛み合わせ構造により連結されているほうが好
ましい。FIG. 18 is a perspective view of main parts showing still another embodiment of the pallet of the present invention. As shown in FIG. 20, this pallet has an edge protection cover 118 that covers the edge 8 of the pallet.
The opening 2' of the fork finger insertion portion 2 and its surroundings are covered with the insertion port protection cover llb. In this case, the insertion port protective cover 11b and the protective material 10. ! - is the 17th
It is preferable that they be connected by the same interlocking structure as shown in the figure.

また第１９図に示すように断面方形状の中空形状を有す
る補強材ｌＯ′を用い、フォークフィンガー差込部２の
内壁９のうち、接合部３及び／又はフォークフィンガー
先端に対応する部分の周辺のみを被覆しても良い。Further, as shown in FIG. 19, a reinforcing material lO' having a hollow shape with a rectangular cross section is used to strengthen the inner wall 9 of the fork finger insertion part 2 around the part corresponding to the joint part 3 and/or the tip of the fork finger. You may cover only.

上記した補強材１０、ｌＯ′は鉄、アルミニウム等の金
属や強化プラスチック（Ｆ　ＲＰ）等により形成された
ものが適宜使用される。The above-mentioned reinforcing material 10, IO' may be made of metal such as iron or aluminum, reinforced plastic (FRP), or the like, as appropriate.

前記した保護カバー７、端縁部保護カバー１１ａ、差込
口保護カバー１１ｂはアクリロニトリル−ブタジェン−
スチレン共重合体、スチレン−ブタジェン共重合体、高
密度ポリエチレン、ポリプロピレン、エチレン−酢酸ビ
ニル共重合体等から形成された射出成形品、鉄やアルミ
ニウム等の金属の薄板からなる成形品等が適宜使用され
る。The protective cover 7, edge protective cover 11a, and socket protective cover 11b are made of acrylonitrile-butadiene.
Injection molded products made from styrene copolymers, styrene-butadiene copolymers, high-density polyethylene, polypropylene, ethylene-vinyl acetate copolymers, etc., molded products made from thin plates of metals such as iron and aluminum, etc. are used as appropriate. be done.

本発明のパレットの製造方法は、まず予備発泡粒子を閉
鎖し得るが密閉し得ない金型に充填し、加熱、発泡させ
てパレットを２以上に分割した形状のパレット構成部材
（型内発泡成型体）を得る。The method for producing a pallet of the present invention involves first filling a mold that can be closed but not sealed with pre-expanded particles, heating and foaming the pallet to divide the pallet into two or more parts (in-mold foam molding). body).

この時用いる予備発泡粒子は密度０．０３〜０．４５ｇ
／−のものが好ましい、ここでいう予備発泡粒子の密度
とは嵩密度であり、予備発泡粒子を、約２００ｃｃの容
器に満たしたときの粒子の重量を容器の容積で除した値
である。耐候性のあるパレットを得たい場合、予備発泡
粒子に予めカーボンブラック等の耐候性材料や酸化防ｔ
ｈ剖、紫外線吸収剤等を混入しておいてもよく、耐候性
材料や酸化防止剤、紫外線吸収剤等を閉鎖し得るが密閉
し得ない金型に予備発泡粒子とともに充填して、加熱、
発泡させてもよい、上記金型としては、最終的に得よう
とするパレットの形状を２以上に分割した形状に対応す
る型内面形状を有し、型面に水蒸気等の加熱媒体が通過
する小孔が形成されているものを用いることができる。The pre-expanded particles used at this time have a density of 0.03 to 0.45 g.
The density of the pre-expanded particles, which is preferably /-, is the bulk density, which is the value obtained by dividing the weight of the pre-expanded particles when a container of about 200 cc is filled with the particles by the volume of the container. If you want to obtain a weather-resistant pallet, pre-expanded particles should be coated with a weather-resistant material such as carbon black or oxidation preventive material.
Alternatively, a weather-resistant material, an antioxidant, an ultraviolet absorber, etc. may be mixed into a mold that can be closed, but cannot be sealed, together with pre-expanded particles, and heated.
The above-mentioned mold, which may be foamed, has an inner surface shape corresponding to the shape of the final pallet divided into two or more parts, and a heating medium such as steam passes through the mold surface. A material with small holes can be used.

次いで２以上に分割した形状のパレット構成部材の端部
同士を、パレットの幅方向に相互に接合ｄ　　　　　　
　　　　　　し、パレット構成部材を一体化する。接合
に先立ち、各パレット構成部材の寸法は切断加工等によ
り均一にしておくことが好ましい、接合の手段としては
、前述したように、例えば適宜の加熱手段を用いる加熱
融着、接着剤による接着、接合するパレット構成部材の
各々の端部に形成された凹部と凸部とを噛み合わせ嵌合
する手段等が挙げられる。Next, the ends of the pallet component members divided into two or more are joined together in the width direction of the pallet.
Then, the pallet components are integrated. Prior to joining, it is preferable to make the dimensions of each pallet component uniform by cutting or the like. As described above, joining methods include, for example, heat fusing using an appropriate heating means, bonding with an adhesive, Examples include means for engaging and fitting concave portions and convex portions formed at each end of the pallet constituent members to be joined.

加熱融着を行う場合にはパレット構成部材を予め所定寸
法より若干大きく形成しておくことにより、融着時の融
着の程度によづて寸法を正確に適合させることができる
。加熱融着時に用いる加熱手段としては、例えば加熱板
、加熱刃、熱風等が挙げられる。When heat fusing is performed, by forming the pallet constituent members in advance to be slightly larger than a predetermined size, the dimensions can be accurately adjusted depending on the degree of fusing during fusing. Examples of the heating means used during heat fusion include a heating plate, heating blade, hot air, and the like.

接着剤を用いて接着する場合には、パレット構成部材の
接合すべき端部を任意幅切断するか、或いは反対に、両
端部間に任意幅の介在部材を挿入する等の方法により寸
法をＵ４整し、目的とする寸法に適合させてもよい、接
着剤は例えば、アクリル系樹脂、酢酸ビニル系樹脂、オ
レフィン系樹脂、エチレン−酢酸ビニル共重合体、アク
リロニトリル−ブタジェンゴム共重合体、ポリビニルア
ルコール、スチレン−ブタジェンゴム共重合体等を含む
接着剤が使用される。When bonding with adhesive, the dimensions are reduced to U4 by cutting the ends of the pallet components to be joined to an arbitrary width, or conversely, by inserting an intervening member of an arbitrary width between both ends. Examples of the adhesive include acrylic resin, vinyl acetate resin, olefin resin, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene rubber copolymer, polyvinyl alcohol, An adhesive containing a styrene-butadiene rubber copolymer or the like is used.

接合に際しては、パレット構成部材を適宜組み合わせ接
合することにより、様Ｈな横幅や縦幅をもつパレットを
製造することができる。At the time of joining, pallets having various widths and heights can be manufactured by suitably combining and joining pallet constituent members.

以上のように複数のパレット構成部材の端部相互をパレ
ットの幅方向に接合した後必要に応して補強具５、保護
カバー７、保護材１０．１０’端縁部保護カバーＺａ、
差込ロ保護カバー１１ｂ等を適宜取付けることにより合
成樹脂発泡成型体製パレットが得られる。After the ends of the plurality of pallet constituent members are joined together in the width direction of the pallet as described above, the reinforcing tool 5, the protective cover 7, the protective material 10, 10' edge protective cover Za,
A pallet made of synthetic resin foam molding can be obtained by appropriately attaching the insertion hole protective cover 11b and the like.

（発明の効果） 本発明の合成樹脂発泡成型体製パレットは、十分な強度
を有し、軽量で緩衝力に勝れる。さらに本発明のパレッ
トは、合成樹脂予備発泡粒子の型内発泡成型体からなる
ため特定の方向に“ストレス”がなく、反りの生じる虞
れもなく、歪による変形も生じないとともに木製パレッ
トのようにささくれや割れが生しる虞れがないため作業
性が良好で安全性にも優れている。更に吸水性が極めて
小さいことから、カビやバクテリヤ等のｗｉ菌が発生す
る広れもない。(Effects of the Invention) The pallet made of the synthetic resin foam molding of the present invention has sufficient strength, is lightweight, and has excellent cushioning force. Furthermore, since the pallet of the present invention is made of an in-mold foamed product made of pre-expanded synthetic resin particles, there is no "stress" in a specific direction, there is no risk of warping, there is no deformation due to distortion, and there is no difference between the pallet and the wooden pallet. There is no risk of hangnails or cracks, so workability is good and safety is excellent. Furthermore, since the water absorption is extremely low, there is no possibility of the spread of germs such as mold and bacteria.

また、本発明の合成樹脂発泡成型体製パレットの製造方
法によれば、パレットを２以上に分割した形状のパレッ
ト構成部材を適宜組み合わせ、バレントの幅方向に接合
することにより種々の大きさのパレットを製造でき、大
きさの異なるパレットを製造する場合でも各パレットの
大きさに対応した大きさの成型用型を準備する必要がな
いとともに、本発明において用いられるパレット構成部
材の成型用型は小型のもので良いため成型用型にかかる
コストを大幅に低減でき、優れた物性を有する種々の大
きさのパレットを安価に製造することができる。Further, according to the method for manufacturing a pallet made of a synthetic resin foam molded product of the present invention, pallets of various sizes can be produced by appropriately combining pallet constituent members in the shape of a pallet divided into two or more parts and joining them in the width direction of the balent. Even if pallets of different sizes are manufactured, there is no need to prepare molds corresponding to the sizes of each pallet, and the molds for forming the pallet components used in the present invention are small. Since it can be used as a material, the cost of molding molds can be significantly reduced, and pallets of various sizes with excellent physical properties can be manufactured at low cost.

【図面の簡単な説明】[Brief explanation of the drawing]

第１閏、第３図、第５図、第７図は各々本発明のパレッ
トを構成するパレット構成部材の異なる実施例を示す斜
視図、第２図、第４図、第６図、第８図、第１３図、第
１４図、第１５図は各々本発明のバレットの異なる実施
例を示す斜視図、第９図は第２図のＩＸ−ＩＸ　ｖＡに
沿う要部縦断面図、第１０は第４図のＸ−Ｘ＆ｌに沿う
要部縦断面図、第１１図は第４図のＸＩ−ＸＩ線線断断
面図第１２図は第１図のＸ１ｒ−Ｘｌｌｌｌ線面断面図
１６図は第１５図のＸＶｒ−ＸＶＩ　ｉＪｌ平断面図、
第１７図は、第１６図のＡ部の拡大略図、第１８図は本
発明パレットの他の実施例の要部斜視図、第１９図は、
本発明のバレ７）の更に別な実施例の平断面図、第２０
図は第１８図のＸＸ−ＸＸ　Ｍｌｌに沿う要部縦断面図
である。 ｌ、１′・・・パレット構成部材 ３・・・・・・接合部 特許出願人　日本スチレンペーパー株式会社第１図 第２図 第９図　　　　　　第１０図 第１３ｒｌｌｉ 第１４図 第１５図 第１６図 第１７図 第１８図The first leap, FIG. 3, FIG. 5, and FIG. 7 are perspective views, FIG. 2, FIG. 4, FIG. 6, and FIG. 13, 14, and 15 are perspective views showing different embodiments of the bullet of the present invention, FIG. 9 is a vertical sectional view of the main part along IX-IX vA in FIG. 11 is a longitudinal sectional view of the main part along the line X-X&l in FIG. 4, FIG. 11 is a sectional view taken along the line XI-XI in FIG. 4, and FIG. XVr-XVI iJl plane sectional view in Figure 15,
FIG. 17 is an enlarged schematic view of part A in FIG. 16, FIG. 18 is a perspective view of the main parts of another embodiment of the pallet of the present invention, and FIG. 19 is
Plane sectional view of still another embodiment of the barre 7) of the present invention, No. 20
The figure is a longitudinal sectional view of the main part along XX-XX Mll in FIG. 18. l, 1'...Pallet component 3...Joint part Patent applicant Japan Styrene Paper Co., Ltd.Figure 1Figure 2Figure 9Figure 10Figure 13rlliFigure 14Figure 15Figure 16 Figure 17 Figure 18

Claims (4)

【特許請求の範囲】[Claims] （１）合成樹脂予備発泡粒子の型内発泡成型体よりなる
２以上のパレット構成部材を、該構成部材の端部同士を
パレットの幅方向に接合して一体化してなることを特徴
とする合成樹脂発泡成型体製パレット。(1) A composition characterized in that two or more pallet constituent members made of in-mold foam molded articles of pre-expanded synthetic resin particles are integrated by joining the ends of the constituent members in the width direction of the pallet. Pallet made of resin foam molding. （２）パレット構成部材の密度が０．０４５〜０．３ｇ
／ｃｍ＾２、２５％圧縮時の圧縮強度が２．０ｋｇ／ｃ
ｍ＾２以上である特許請求の範囲第１項記載の合成樹脂
発泡成型体製パレット。(2) Density of pallet components is 0.045-0.3g
/cm^2, compressive strength at 25% compression is 2.0kg/c
A pallet made of a synthetic resin foam molding according to claim 1, which has a diameter of m^2 or more. （３）合成樹脂予備発泡粒子を成型用型に充填し、加熱
発泡させてパレットを２以上に分割した形状のパレット
構成部材を成型し、次いで２以上のパレット構成部材の
端部同士をパレットの幅方向に接合し、パレット構成部
材相互を一体化して所望の形状及び大きさを有するパレ
ットを得ることを特徴とする合成樹脂発泡成型体製パレ
ットの製造方法。(3) Fill a mold with pre-expanded synthetic resin particles, heat and foam them to form pallet components in the shape of dividing the pallet into two or more parts, and then connect the ends of the two or more pallet components to each other. A method for manufacturing a pallet made of a synthetic resin foam molding, which comprises joining in the width direction and integrating pallet constituent members to obtain a pallet having a desired shape and size. （４）合成樹脂予備発泡粒子の密度が０．０３〜０．４
５ｇ／ｃｍ＾２である特許請求の範囲第３項記載の合成
樹脂発泡成型体製パレットの製造方法。(4) The density of the synthetic resin pre-expanded particles is 0.03 to 0.4
A method for producing a pallet made of a synthetic resin foam molding according to claim 3, wherein the pallet has a weight of 5 g/cm^2.
JP59194975A 1984-09-18 1984-09-18 Pallet of synthetic resin foamed and molded body and manufacture thereof Granted JPS6172540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59194975A JPS6172540A (en) 1984-09-18 1984-09-18 Pallet of synthetic resin foamed and molded body and manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59194975A JPS6172540A (en) 1984-09-18 1984-09-18 Pallet of synthetic resin foamed and molded body and manufacture thereof

Publications (2)

Publication Number Publication Date
JPS6172540A true JPS6172540A (en) 1986-04-14
JPH0423631B2 JPH0423631B2 (en) 1992-04-22

Family

ID=16333455

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59194975A Granted JPS6172540A (en) 1984-09-18 1984-09-18 Pallet of synthetic resin foamed and molded body and manufacture thereof

Country Status (1)

Country Link
JP (1) JPS6172540A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63162478A (en) * 1986-12-23 1988-07-06 日本スチレンペ−パ−株式会社 Top frame for packaging
JPH03226455A (en) * 1990-01-31 1991-10-07 Kanazawa Jushi Kogyo Kk Takedown forklift pallet
JPH03240648A (en) * 1990-02-19 1991-10-28 Kanazawa Jushi Kogyo Kk Knocked-down forklift pallet
JPH0435530U (en) * 1990-07-20 1992-03-25
JP2005187038A (en) * 2003-12-26 2005-07-14 Ricoh Co Ltd Pallet, and recycling-oriented carrying and packing device including the pallet

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63162478A (en) * 1986-12-23 1988-07-06 日本スチレンペ−パ−株式会社 Top frame for packaging
JPH03226455A (en) * 1990-01-31 1991-10-07 Kanazawa Jushi Kogyo Kk Takedown forklift pallet
JPH03240648A (en) * 1990-02-19 1991-10-28 Kanazawa Jushi Kogyo Kk Knocked-down forklift pallet
JPH0435530U (en) * 1990-07-20 1992-03-25
JP2005187038A (en) * 2003-12-26 2005-07-14 Ricoh Co Ltd Pallet, and recycling-oriented carrying and packing device including the pallet

Also Published As

Publication number Publication date
JPH0423631B2 (en) 1992-04-22

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