WO2011009229A1 - 植物纤维模塑杯盖倒钩槽之制造方法 - Google Patents

植物纤维模塑杯盖倒钩槽之制造方法 Download PDF

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Publication number
WO2011009229A1
WO2011009229A1 PCT/CN2009/000826 CN2009000826W WO2011009229A1 WO 2011009229 A1 WO2011009229 A1 WO 2011009229A1 CN 2009000826 W CN2009000826 W CN 2009000826W WO 2011009229 A1 WO2011009229 A1 WO 2011009229A1
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WO
WIPO (PCT)
Prior art keywords
cup cover
molding
mold
molding cup
inner mold
Prior art date
Application number
PCT/CN2009/000826
Other languages
English (en)
French (fr)
Inventor
李庭南
赖宗伸
Original Assignee
Li Tingnan
Lai Tzungshen
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 Li Tingnan, Lai Tzungshen filed Critical Li Tingnan
Priority to US13/123,242 priority Critical patent/US8900505B2/en
Priority to PCT/CN2009/000826 priority patent/WO2011009229A1/zh
Priority to JP2012507567A priority patent/JP5340477B2/ja
Publication of WO2011009229A1 publication Critical patent/WO2011009229A1/zh

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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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/3642—Bags, bleeder sheets or cauls for isostatic pressing
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • B29C2043/3615—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices
    • B29C2043/3626—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices multi-part rams, plungers or mandrels
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/3642—Bags, bleeder sheets or cauls for isostatic pressing
    • B29C2043/3649—Inflatable bladders using gas or fluid and related details
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C2043/3665—Moulds for making articles of definite length, i.e. discrete articles cores or inserts, e.g. pins, mandrels, sliders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/26—Scrap or recycled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0056—Biocompatible, e.g. biopolymers or bioelastomers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0059—Degradable
    • B29K2995/006—Bio-degradable, e.g. bioabsorbable, bioresorbable or bioerodible
    • 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
    • B29L2001/00—Articles provided with screw threads
    • 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
    • B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
    • B29L2031/565—Stoppers or lids for bottles, jars, or the like, e.g. closures for containers
    • 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

Definitions

  • the invention relates to a method for manufacturing a plant fiber molding cup lid barb groove, in particular to a barb which is formed into a concave shape on a side edge of a cup lid formed by a vegetable fiber material by a molding molding technique.
  • the method for manufacturing the trough in order to obtain a tight binding of the top edge of the cup by the formation of the barb groove by the plant fiber molding cup cover.
  • plant fiber molding cup cover refers to a material made of plant fiber material (generally, pulp is used, but other plant fiber materials or plant fiber composite materials are not excluded).
  • the cup caps molded by the molding technology are generally referred to as "paper cup lids”. Therefore, the following items are referred to as “molding cup lids” or “paper cup lids”.
  • the shaping (plastic molding) of the products is carried out by hot pressing. There are two common methods. The first method is to make the pulp-forming embryos at a moisture content of about 55-70%.
  • the hot pressing and shaping equipment directly performs hot pressing and shaping operation, and the hot pressing temperature is 150 ° C ⁇ 10 ° C.
  • the hot pressing time depends on the volume of the product (the larger the volume, the longer the hot pressing time must be), for the paper cup
  • the hot pressing time of the cover is 45 seconds ⁇ 5 seconds; the second method is to first dry the pulp-forming embryo at a moisture content of about 55-70%, and then heat-press it when the water content is reduced to 7-10%.
  • the shaping equipment is hot-pressed and the hot pressing temperature is 150 °C ⁇ 1 (TC, but the hot pressing time is shorter than the method.
  • the hot pressing operation is currently used in the plant fiber (pulp) molding industry.
  • the object of the present invention is to provide a method for manufacturing a plant fiber molding cup lid barb groove, which is a manufacturing method for forming a barb groove recessed into the inner side of a lid of a lid formed by a vegetable fiber material by a molding molding technique.
  • the plant fiber molding cup cover is tightly combined with the top edge of the cup body by the formation of the barb groove.
  • the invention relates to a method for manufacturing a plant fiber molding cup lid barb groove, which is a cover of a vegetable fiber molding cup cover which is subjected to thermocompression shaping and an outer mold which is matched with the side profile of the molding cup lid.
  • the outer mold is provided with a laterally-shaped sliding groove corresponding to the molding cup cover for forming the barb groove, and is provided for inserting a set of forming sliders, wherein the inner edges of the sliders have a convex molding strip; the interior of the molding cup cover is accommodated in an inner mold, and a top block is further disposed in the middle, and the inner mold and the top block are matched with the contour of the molding cup cover.
  • the mold has a ring-shaped receiving groove corresponding to the molding cup cover to prepare the barb groove, and the position and the contour thereof are matched with the forming bar; the outer mold, the inner mold and the top material are first manufactured during manufacture.
  • the block is closed, and then the slider is advanced inwardly so that its profiled strip abuts against the surface of the molded cup lid and continues to advance so that the surface of the molded cup lid retracts into the inner mold as the profile of the molded strip deforms
  • the groove is received in the groove, thereby forming an annular barb groove.
  • the slider is then outwardly retracted, and the outer mold and the inner mold are opened in the opposite direction to the mold closing. And the molding block of the barbed groove is ejected by the top block to complete a finished product.
  • the formed strips of the sliders may be combined into an annular body when they are advanced inwardly.
  • the invention relates to a method for manufacturing a plant fiber molding cup lid barb groove, which is a cover of a vegetable fiber molding cup cover which is subjected to thermocompression shaping, and an outer mold for pressing the molding cup lid, and The outer portion of the molded cup lid on which the barb groove is prepared to be formed is closely abutted by a forming mold wheel which has a convex shape mainly for forming a barb groove facing the molding cup cover.
  • the inside of the molded cup cover is accommodated in an inner mold, and a top block is further disposed in the middle, and the inner mold and the top block are matched with the contour of the molded cup cover, and the inner mold corresponds to
  • the molding cup cover has a ring-shaped receiving groove at a position where the barb groove is prepared, and the position and the contour thereof are matched with the forming bar; when the manufacturing, the outer mold, the inner mold and the top block are closed, Then advancing the die wheel inwardly, causing the forming strip to abut against the surface of the molding cup cover, and proceeding to retract the surface of the molding cup cover into the receiving groove of the inner mold as the profile of the molding strip is deformed, Then driving the die wheel to rotate at least one turn around the surface of the molding cup cover, thereby forming Passage groove annular barbs.
  • the mold wheel is then retracted outward, and the outer mold and the inner mold are opened in the opposite direction to the mold closing. And the molded cup cover having the barbed groove is ejected by the top block to complete a finished product.
  • the mold wheel may be one or more.
  • the invention relates to a method for manufacturing a plant fiber molding cup lid barb groove, which is formed by sealing a balloon with a fixing seat on the outside of a thermoplastically shaped plant fiber molding cup cover, so that the airbag faces the molding.
  • An outer contour of the lid of the cup, the air bag has an air inlet extending from the fixing seat; the interior of the molding cup cover is accommodated in an inner mold, and a top block is further disposed therein, and the inner mold and the top block are The contour of the molding cup cover is matched, and the inner mold has a ring-shaped receiving groove corresponding to the molding cup cover to prepare the barb groove; the air bag is covered by the fixing seat by the fixing seat
  • the mold cup is externally closed, and the inner mold and the top block are closed from the inside of the mold cup, and then high pressure gas is sent into the air bag through the air inlet, so that the air bag is fully inflated and filled All the space between the cup lid and the air bag is molded, and the force of the high pressure gas pushes
  • the high-pressure gas in the air bag is then released, so that the surface of the air bag is separated from the outside of the molded cup cover, and The mold is also opened in the opposite direction to the mold closing, and the molded cup lid of the barbed groove is ejected by the top block to complete a finished product.
  • the air pressure of the airbag is 0. 6-0. 8MPa, and the inflation time is about 3 seconds.
  • the invention discloses a method for manufacturing a plant fiber molding cup lid barb groove, and the advantages and effects thereof are as follows: a kind of indentation into the inner side of the cup cover formed by the vegetable fiber material by the molding molding technology The method for manufacturing the hook groove, so that the plant fiber molded cup cover is tightly combined with the top edge of the cup body by the formation of the barb groove, and the method is simple and practical.
  • FIG. 1 is a schematic view showing the operation of closing a mold according to a first embodiment of the present invention.
  • Figure 2 shows an enlarged view of a part of the first figure.
  • Figure 3 is a schematic view showing the action of forming in the first embodiment of the present invention.
  • 4 is a schematic view showing the operation of the mold opening according to the first embodiment of the present invention.
  • Figure 5 shows an enlarged view of a part of the fourth figure.
  • FIG. 6 is a schematic view showing the operation of closing a mold according to a second embodiment of the present invention.
  • Figure 7 shows an enlarged view of a part of the sixth figure.
  • Figure 8 is a schematic view showing the action of forming in the second embodiment of the present invention.
  • FIG. 9 is a schematic view showing the operation of the mold opening according to the second embodiment of the present invention.
  • Figure 10 shows an enlarged view of a part of the ninth figure.
  • Figure 11 is a schematic view showing the action of closing the mold according to the third embodiment of the present invention.
  • Figure 12 is a schematic view showing the action of forming in the third embodiment of the present invention.
  • Figure 13 is a schematic view showing the opening operation of the third embodiment of the present invention.
  • top block 14 one - slider
  • the invention relates to a method for manufacturing a plant fiber molding cup lid barb groove, which is mainly for a vegetable fiber molding cup cover which has been hot-pressed and shaped, and is subjected to reshaping processing at a normal temperature to form a barb groove on the side surface. , in use, close contact with the top edge of the disposable cup. Therefore, the thermoformed vegetable fiber molded cup lid (without any negative angle structure) is a substantially existing article in the present invention, and the manufacturing process thereof need not be described. In order to form a barb groove on the side of the vegetable fiber molded cup lid after hot pressing, the present invention has developed various manufacturing methods, which are listed later.
  • the first embodiment of the present invention is a method for manufacturing a directly press-formed barb groove, see Figures 1 and 2. As shown, it is an outer mold 11 which is externally covered by a heat-pressed vegetable fiber molding cup cover 10 (the mold cup cover 10 in FIGS. 1, 2 does not have any negative angle structure). The outer mold 11 must be matched with the side profile of the molding cup cover 10, and a barb groove 101 is prepared on the outer mold 11 corresponding to the molding cup cover 10 (please refer to FIGS.
  • a laterally-shaped annular groove 111 is provided for receiving a set of sliders 14 for forming, the inner edges of the sliders 14 having outwardly convex molding strips 141, when the molding strips 141 are common When advancing inward, it can be merged into an annular body; the interior of the molding cup cover 10 is accommodated in an inner mold 12, and a top block 13 is further accommodated in the middle thereof, and the inner mold 12 and the top block 13 must be combined with The contours of the molding cup cover 10 are matched, and the inner mold 12 has a ring concave portion corresponding to the molding cup cover 10 in preparation for the barb groove 101 (please refer to FIGS. 4 and 5 first).
  • the receiving groove 121 (shown in FIG. 2); its position and contour must match the forming strip 141.
  • the state shown in Fig. 1 is first formed, and then the slider 14 is pushed by external power (for example, a power cylinder). All of them are advanced inwardly so that the molding strips 141 together against the surface of the molding cup cover 10, and continue to advance so that the surface of the molding cup cover 10 is deformed along the contour of the molding strip 141 and retracted into the inner mold 12
  • external power for example, a power cylinder
  • an annular barb groove 101 is formed, and the state shown in FIG. 3 is formed at this time; then, as shown in FIG. 4, the sliders 14 are quickly pulled by external power.
  • a second embodiment of the present invention is a method for manufacturing a roll press forming barb groove, which is shown in Figs. 6 and 7, which is a vegetable fiber molded cup cover 20 after heat pressing (in Fig. 6
  • the outer surface of the molded cup cover 20 in the absence of any negative angle structure is covered by an outer mold 21, and the main function is to press the molding cup cover 20 and prepare the molding on the molding cup cover 20.
  • the space where the barb groove 201 please refer to FIG. 9 and FIG.
  • a molding wheel 24 for forming can be brought close to the mold wheel 24 (may be one or a plurality of) mainly facing the molding strip 241 having a convex shape on the molding cup cover 20; the inside of the molding cup 20 is accommodated in an inner mold 22, and the middle portion is more A top block 23 is provided.
  • the inner mold 22 and the top block 23 must be matched with the contour of the molding cup cover 20.
  • the inner mold 22 is pre-formed with the barb groove 201 corresponding to the molding cup cover 20 ( Please refer to the receiving groove 221 of a ring recessed as shown in Figs. 9 and 10 (as shown in Fig. 7); The position and contour must match the profiled strip 241.
  • the state shown in Fig. 6 is first formed, and then the mold wheel 24 is pushed by external power (for example, a power cylinder).
  • the inner portion is advanced so that the molding strip 241 abuts against the surface of the molding cup cover 20, and continues to advance so that the surface of the molding cup lid 20 is retracted into the receiving groove 221 of the inner mold 22 along with the contour deformation of the molding strip 241.
  • the mold wheel 24 is driven to rotate around the surface of the molding cup cover 20 at least one turn, thereby forming an annular barb groove 201, and the state shown in FIG. 8 is formed at this time; As shown in FIG.
  • the mold wheel 24 is quickly pulled outward by the external power, and the outer mold 21 and the inner mold 22 are opened in the opposite direction when the mold is closed, and the top block 23 is used to barb.
  • the molded cup cover 20 of the slot 201 (shown in Figures 9 and 10) is ejected, that is, the finished one is completed.
  • a third embodiment of the present invention is a method of manufacturing an airbag press-formed barb groove, which is shown in Fig. 11, which is a vegetable fiber molded cup cover 30 after heat-shaping (in Fig. 11)
  • the outer portion of the molded cup cover 30 that does not have any negative angle structure is covered by a fixing seat 31 to cover the outer contour of the molded cup cover 30, and the air bag 34 has an air intake.
  • the opening 341 extends out of the fixing base 31; the interior of the molding cup cover 30 is accommodated in an inner mold 32, and a top block 33 is further accommodated therein, and the inner mold 32 and the top block 33 must be molded with the top block 33.
  • the contour of the lid 30 is matched, and the inner mold 32 has a ring-shaped receiving groove 321 corresponding to the molding cup cover 30 in preparation for the barb groove 301 (as shown in Fig. 13).
  • the inner mold 32 and the top block 33 are also closed from the inside of the molding cup cover 30.
  • the air pressure is in the range of 0. 6-0. 8MPa, inflated, the air pressure is 0. 6-0. 8MPa, inflated.
  • the time is about 3 seconds or so, the air bag 34 is fully inflated (shaped in the same outer mold), and all the space between the molding cup cover 30 and the air bag 34 is filled, and the force of the high pressure gas pushes the molded cup cover 30.
  • the surface deformation is retracted into the receiving groove 321 of the inner mold 32, thereby forming an annular barb groove 301, and the state shown in Fig.
  • the airbag is formed.
  • the high-pressure gas in the air 34 is released, so that the surface of the air bag 34 is quickly separated from the outside of the molding cup cover 30 (in the same manner as the outer mold is opened), and the inner mold 32 is also opened in the opposite direction when the mold is closed, and
  • the molding cup cover 30 having the barb groove 301 is ejected by the top block 33, that is, the completion is completed.
  • the present invention mainly relates to a method for manufacturing a vegetable fiber molded cup lid barb groove, which is a plastic fiber molded cup lid which has been subjected to hot pressing and shaping, and is subjected to reshaping at a normal temperature ( Non-use of hot pressing, so it does not increase the cost of thermal energy), so that a barb groove can be formed on the side thereof, and the top edge of the disposable cup can be tightly combined by using, in which, the first implementation is implemented.
  • the manufacturing method of the direct press forming barb groove shown in the example, or the manufacturing method of the roller press forming barb groove shown in the second embodiment, or the air bag pressing forming barb groove shown in the third embodiment The manufacturing method can be done to complete the same barb groove.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Description

植物纤维模塑杯盖倒钩槽之制造方法
【技术领域】
本发明是关于一种植物纤维模塑杯盖倒钩槽之制造方法， 特别是指一种在 由植物纤维材质材料利用模压塑造技术成型的杯盖侧缘上更成型出向内部凹入 的倒钩槽的制造方法， 以利植物纤维模塑杯盖借由该倒钩槽的形成而得与杯体 顶缘达成紧密结合。
【背景技术】 本发明所称的 "植物纤维模塑杯盖"，是指采用植物纤维材质的材料（一般 以纸浆为多， 但不排除其它植物纤维的材料或植物纤维的复合材料）， 利用模 压塑造技术成型的杯盖， 一般以俗称 "纸塑杯盖"为多， 因此以下若以 "模塑 杯盖"或 "纸塑杯盖"称呼， 皆系指相同物品。 目前在植物纤维（纸浆）模塑 行业中，对于产品的整形（塑型）都是实行热压方式进行，常见的方法有二种， 方法一是将纸浆成型胚在含水率约 55- 70%状态时以热压整形设备直接进行热 压整形作业， 热压温度为 150°C ± 10°C， 热压时间视产品的体积而定（体积越 大热压时间必须越久）， 对于纸塑杯盖而言热压时间在 45秒 ±5秒； 方法二是 将纸浆成型胚在含水率约 55-70%状态时先进行烘干，待含水率降低至 7-10% 状态时再以热压整形设备进行热压整形， 热压温度同为 150°C ± 1(TC， 但热 压时间会较方法一者为短。 实行热压整形作业是目前植物纤维（纸浆）模塑行 业中惯用的技术， 其中， 由于热压整形作业必须借由上模具与下模具作上下闭 合方得实行， 而上、 下模具在进行闭模与开模动作时需要移动距离， 因此为了 产品可以顺利脱模， 整形产品的内部无法产生负角度的结构， 因此对于纸塑杯 盖而言就无法产生能与杯体顶缘紧密结合的倒钩槽， 所以长久以来一直未有能 与杯体产生极佳结合效果的纸塑杯盖问世。
【发明内容】 本发明的目的在于提供一种植物纤维模塑杯盖倒钩槽之制造方法， 即由植 物纤维材质材料利用模压塑造技术成型的杯盖侧缘上更成型出向内部凹入的倒 钩槽的制造方法， 以利植物纤维模塑杯盖借由该倒钩槽的成型而与杯体顶缘达 成紧密结合。
本发明一种植物纤维模塑杯盖倒钩槽之制造方法， 是在一经热压整形后的 植物纤维模塑杯盖的外部盖合一与该模塑杯盖的侧面轮廓相搭配的外模， 该外 模上对应于模塑杯盖预备成型出倒钩槽之处开设有一道横向成环状的滑槽， 供 容置入一组成型用的滑块， 该等滑块的内缘具有外凸的成型条； 该模塑杯盖的 内部容设入一内模， 其中间更容设一顶料块， 该内模及顶料块与该模塑杯盖的 轮廓相搭配， 该内模上对应于该模塑杯盖预备成型出倒钩槽之处具有一环内凹 的承接槽， 其位置及轮廓与该成型条相对应配合； 制造时先使外模、 内模与顶 料块闭模， 然后使滑块向内前进， 使其成型条抵住该模塑杯盖的表面， 并且继 续前进使模塑杯盖的表面随着成型条的轮廓变形而縮入该内模的承接槽内， 因 此而成形出一道环状的倒钩槽。
在上述发明中， 在该模塑杯盖的表面上成形出一道环状的倒钩槽后， 接着 使滑块向外退开， 且外模及内模向闭模时的反方向开模， 并由该顶料块将己具 倒钩槽的模塑杯盖顶出， 即完成一成品。
在上述发明中，当该等滑块的成型条共同向内前进时可合并成为一环状体。 本发明一种植物纤维模塑杯盖倒钩槽之制造方法， 是在一经热压整形后的 植物纤维模塑杯盖的外部盖合一压制住该模塑杯盖的外模， 并在该模塑杯盖上 预备成型出倒钩槽之处外部由一成形用的模轮靠近抵住， 该模轮主要于面临该 模塑杯盖上预备成型出倒钩槽之处具有外凸的成型条； 该模塑杯盖的内部容设 入一内模， 其中间更容设一顶料块， 该内模及顶料块与该模塑杯盖的轮廓相搭 配，该内模上对应于该模塑杯盖预备成型出倒钩槽之处具有一环内凹的承接槽， 其位置及轮廓与该成型条相对应配合； 制造时先使外模、 内模与顶料块闭模， 然后使模轮向内前进， 使其成型条抵住该模塑杯盖的表面， 并且继续前进使模 塑杯盖的表面随着成型条的轮廓变形而缩入该内模的承接槽内， 然后驱动该模 轮绕着模塑杯盖的表面转动至少一圈， 因此而成形出一道环状的倒钩槽。 在上述发明中， 在该模塑杯盖的表面上成形出一道环状的倒钩槽后， 接着 使模轮向外退开， 且外模及内模向闭模时的反方向开模， 并由该顶料块将已具 倒钩槽的模塑杯盖顶出， 即完成一成品。
在上述发明中， 该模轮可以是一个以上。
本发明一种植物纤维模塑杯盖倒钩槽之制造方法， 是在一经热压整形后的 植物纤维模塑杯盖的外部藉由一固定座盖合一气囊， 使该气囊面临该模塑杯盖 的外部轮廓， 该气囊有一进气口伸出该固定座； 该模塑杯盖的内部容设入一内 模， 其中间更容设一顶料块， 该内模及顶料块与该模塑杯盖的轮廓相搭配， 该 内模上对应于该模塑杯盖预备成型出倒钩槽之处具有一环内凹的承接槽； 制造 时由该固定座带着气囊盖合于该模塑杯盖外部， 且使该内模与顶料块自该模塑 杯盖的内部闭模， 然后将高压气体经由进气口送入该气囊内， 使该气囊完全膨 胀， 并填塞住模塑杯盖与气囊间的所有空间， 并且高压气体的力量推使该模塑 杯盖的表面变形缩入该内模的承接槽内， 因此而成形出一道环状的倒钩槽。
在上述发明中， 在该模塑杯盖的表面上成形出一道环状的倒钩槽后， 接着 将气囊内的高压气体泄出， 使气囊的表面与模塑杯盖的外部脱离， 且内模也向 闭模时的反方向开模， 并由该顶料块将己具倒钩槽的模塑杯盖顶出， 即完成一 成品。
在上述发明中， 对该气囊的进气， 气压在 0. 6-0. 8MPa，充气时间在 3秒左 右。
本发明一种植物纤维模塑杯盖倒钩槽之制造方法， 其优点及功效在于： 一 种在由植物纤维材质材料利用模压塑造技术成型的杯盖侧缘上更成型出向内部 凹入的倒钩槽的制造方法， 从而使植物纤佳模塑杯盖借由该倒钩槽的形成而得 与杯体顶缘紧密结合， 方法简单实用。
【附图说明】
图 1所示为本发明第一实施例闭模的动作示意图
图 2所示为第一图中的部份部位放大图
图 3所示为本发明第一实施例成形的动作示意图 图 4所示为本发明第一实施例开模的动作示意图
图 5所示为第四图中的部份部位放大图
图 6所示为本发明第二实施例闭模的动作示意图
图 7所示为第六图中的部份部位放大图
图 8所示为本发明第二实施例成形的动作示意图
图 9所示为本发明第二实施例开模的动作示意图
图 10所示为第九图中的部份部位放大图
图 11所示为本发明第三实施例闭模的动作示意图
图 12所示为本发明第三实施例成形的动作示意图
图 13所示为本发明第三实施例开模 动作示意图
图中具体标号如下：
10、 20、 30 ---模塑杯盖 101、 201、 301 ---侄翻
11、 21 ---外模 111—-滑槽
12、 22、 32 -―内模 121、 221、 321 ---承接 ^
13、 23、 33 ---顶料块 14一-滑块
141、 241—-成型条 24— -模轮
31 -—固定座
341—-进气口
【具体实施方式】
下面结合附图和实施例， 对发明的技术方案做进一步的说明。
本发明一种植物纤维模塑杯盖倒钩槽之制造方法， 主要是针对己热压整形 后的植物纤维模塑杯盖， 在常温下进行再次整形加工， 使在侧面成型出一道倒 钩槽， 于使用时与一次性杯体的顶缘达成紧密结合作用。 因此经热压整形后的 植物纤维模塑杯盖（无任何负角度结构存在）在本发明中是基本上已存在的物 品， 而不必再去赘述其制造过程。 而为在经热压整形后的植物纤维模塑杯盖的 侧面成型出一道倒钩槽， 本发明研发出多种制造方法， 列明于后。
本发明第一实施例是一种直接压制成型倒钩槽之制造方法， 请参阅图 1、 2 所示， 其是在一经热压整形后的植物纤维模塑杯盖 10 (在图 1、 2中的模塑杯 盖 10尚无任何负角度的结构存在）的外部盖合一外模 11，该外模 11必须与该 模塑杯盖 10的侧面轮廓相搭配，并且在该外模 11上对应于模塑杯盖 10预备成 型出倒钩槽 101 (请先参阅图 4、 5 所示）之处开设有一道横向成环状的滑槽 111，供容置入一组成型用的滑块 14，该等滑块 14的内缘具有外凸的成型条 141， 当该等成型条 141共同向内前进时可合并成为一环状体;该模塑杯盖 10的内部 容设入一内模 12，其中间更容设一顶料块 13，该内模 12及顶料块 13必须与该 模塑杯盖 10的轮廓相搭配，该内模 12上对应于该模塑杯盖 10预备成型出倒钩 槽 101 (请先参阅图 4、5所示）之处具有一环内凹的承接槽 121 (图 2所示）； 其位置及轮廓必须与该成型条 141相对应配合。
根据上述组成， 当外模 11、 内模 12与顶料块 13闭模时即先形成图 1所示 的状态，然后借由外在动力（例如:动力缸体）推动使该等滑块 14皆向内前进， 使其成型条 141共同抵住该模塑杯盖 10的表面， 并且继续前进使该模塑杯盖 10的表面随着成型条 141的轮廓变形， 并缩入该内模 12的承接槽 121内， 因 此而成形出一道环状的倒钩槽 101， 此时即形成图 3所示的状态； 接着， 如图 4 所示，借由外在动力拉动该等滑块 14迅速向外退开，且外模 11及内模 12向闭 模时的反方向开模， 并由该顶料块 13将已具倒钩槽 101 (如图 4、 5所示）的 模塑杯盖 10顶出， 即完成一成品。
接着， 本发明第二实施例是一种滚轮压制成型倒钩槽之制造方法， 请参阅 图 6、 7所示， 其是在一经热压整形后的植物纤维模塑杯盖 20 (在图 6、 7中的 模塑杯盖 20尚无任何负角度的结构存在）的外部盖合一外模 21， 其作用主要 是压制住模塑杯盖 20，并在该模塑杯盖 20上预备成型出倒钩槽 201 (请先参阅 图 9、 10所示）之处外部预留不被压制住的空间，供一成形用的模轮 24可以靠 近抵住， 该模轮 24 (可以是一个或多个）主要是面临该模塑杯盖 20上预备成 型出倒钩槽 201之处具有外凸的成型条 241 ;该模塑杯盖 20的内部容设入一内 模 22， 其中间更容设一顶料块 23， 该内模 22及顶料块 23必须与该模塑杯盖 20的轮廓相搭配， 该内模 22上对应于该模塑杯盖 20预备成型出倒钩槽 201 ( 请先参阅图 9、 10所示）之处具有一环内凹的承接槽 221 (如图 7所示）； 其 位置及轮廓必须与该成型条 241相对应配合。
根据上述组成， 当外模 21、 内模 22与顶料块 23闭模时即先形成图 6所示 的状态， 然后借由外在动力（例如： 动力缸体）推动使该模轮 24向内前进， 使 其成型条 241抵住模塑杯盖 20的表面， 并且继续前进使该模塑杯盖 20的表面 随着成型条 241的轮廓变形而縮入该内模 22的承接槽 221内，然后即驱动该模 轮 24绕着模塑杯盖 20的表面转动至少一圈， 因此而成形出一道环状的倒钩槽 201 , 此时即形成图 8所示的状态； 接着， 如图 9所示， 借由外在动力拉动该模 轮 24迅速向外退开，且外模 21及内模 22向闭模时的反方向开模，并由该顶料 块 23将己具倒钩槽 201 (如图 9、 10所示）的模塑杯盖 20顶出， 即完成一成
P 接着， 本发明第三实施例是一种气囊压制成型倒钩槽之制造方法， 请参阅 图 11所示，其是在一经热压整形后的植物纤维模塑杯盖 30 (在图 11中的模塑 杯盖 30尚无任何负角度的结构存在）的外部藉由一固定座 31盖合一气囊 34， 使该气囊 34面临该模塑杯盖 30的外部轮廓，该气囊 34有一进气口 341伸出该 固定座 31 ;该模塑杯盖 30的内部容设入一内模 32，其中间更容设一顶料块 33， 该内模 32及顶料块 33必须与该模塑杯盖 30的轮廓相搭配， 该内模 32上对应 于该模塑杯盖 30预备成型出倒钩槽 301之处具有一环内凹的承接槽 321 (如图 13所示）。
根据上述组成， 当固定座 31带着气囊 34 (尚未进气）盖合于该模塑杯盖 30外部时， 该内模 32与顶料块 33也自该模塑杯盖 30的内部闭模， 使先形成 图 11所示的状态，然后借由外在动力（例如：气体压缩机）将高压气体经由进 气口 341送入该气囊 34内（气压在 0. 6-0. 8MPa,充气时间约 3秒左右），使该 气囊 34完全膨胀（形同一外模），并填塞住该模塑杯盖 30与气囊 34间的所有 空间， 并且高压气体的力量推使该模塑杯盖 30的表面变形缩入该内模 32的承 接槽 321内， 因此而成形出一道环状的倒钩槽 301， 此时即形成图 12所示的状 态； 接着， 如图 13所示， 将该气囊 34内的高压气体泄出，使该气囊 34的表面 与该模塑杯盖 30的外部迅速脱离（形同外模开模）， 且内模 32也向闭模时的 反方向开模， 并由该顶料块 33将已具倒钩槽 301的模塑杯盖 30顶出， 即完成 由以上说明可知， 本发明的主要是在于申请一种植物纤维模塑杯盖倒钩槽 之制造方法， 是对已热压整形后的植物纤维模塑杯盖， 在常温下进行再次整形 加工（非用热压， 故不增加热能成本）， 使在其侧面成型出一道倒钩槽， 借于 使用时与一次性杯体的顶缘可以达成紧密结合的作用， 其中， 不论是实行第一 实施例所示的直接压制成型倒钩槽之制造方法， 或实行第二实施例所示的滚轮 压制成型倒钩槽之制造方法， 或是实行第三实施例所示的气囊压制成型倒钩槽 之制造方法， 都可以制造完成相同的倒钩槽。

Claims

权 利 要 求 书
1.一种植物纤维模塑杯盖倒钩槽之制造方法， 其特征在于： 在一经热压整 形后的植物纤维模塑杯盖的外部盖合一与该模塑杯盖的侧面轮廓相搭配的外 模， 该外模上对应于模塑杯盖预备成型出倒钩槽之处开设有一道横向成环状的 滑槽， 供容置入一组成型用的滑块， 该等滑块的内缘具有外凸的成型条； 该模 塑杯盖的内部容设入一内模， 其中间更容设一顶料块， 该内模及顶料块与该模 塑杯盖的轮廓相搭配， 该内模上对应于该模塑杯盖预备成型出倒钩槽之处具有 一环内凹的承接槽， 其位置及轮廓与该成型条相对应配合； 制造时先使外模、 内模与顶料块闭模，然后使滑块向内前进，使其成型条抵住该模塑杯盖的表面， 并且继续前进使模塑杯盖的表面随着成型条的轮廓变形而缩入该内模的承接槽 内， 因此而成形出一道环状的倒钩槽。
2.根据权利要求 1所述的植物纤维模塑杯盖倒钩槽之制造方法， 其特征在 于：在该模塑杯盖的表面上成形出一道环状的倒钩槽后，接着使滑块向外退开， 且外模及内模向闭模时的反方向开模， 并由该顶料块将己具倒钩槽的模塑杯盖 顶出， 即完成一成品。
3. 根据权利要求 1所述的植物纤维模塑杯盖倒钩槽之制造方法，其特征在 于： 当该等滑块的成型条共同向内前进时可合并成为一环状体。
4.一种植物纤维模塑杯盖倒钩槽之制造方法， 其特征在于： 在一经热压整 形后的植物纤维模塑杯盖的外部盖合一压制住该模塑杯盖的外模， .并在该模塑 杯盖上预备成型出倒钩槽之处外部由一成形用的模轮靠近抵住， 该模轮主要于 面临该模塑杯盖上预备成型出倒钩槽之处具有外凸的成型条； 该模塑杯盖的内 部容设入一内模， 其中间更容设一顶料块， 该内模及顶料块与该模塑杯盖的轮 廓相搭配， 该内模上对应于该模塑杯盖预备成型出倒钩槽之处具有一环内凹的 承接槽， 其位置及轮廓与该成型条相对应配合； 制造时先使外模、 内模与顶料 块闭模， 然后使模轮向内前进， 使其成型条抵住该模塑杯盖的表面， 并且继续 前进使模塑杯盖的表面随着成型条的轮廓变形而缩入该内模的承接槽内， 然后 驱动该模轮绕着模塑杯盖的表面转动至少一圈， 因此而成形出一道环状的倒钩
5. 根据权利要求 4所述的植物纤维模塑杯盖倒钩槽之制造方法，其特征在 于：在该模塑杯盖的表面上成形出一道环状的倒钩槽后，接着使模轮向外退开， 且外模及内模向闭模时的反方向开模， 并由该顶料块将已具倒钩槽的模塑杯盖 顶出， 即完成一成品。
6. 根据权利要求 4所述的植物纤维模塑杯盖倒钩槽之制造方法，其特征在 于： 该模轮可以是一个以上。
7.—种植物纤维模塑杯盖倒钩槽之制造方法， 其特征在于： 在一经热压整 形后的植物纤维模塑杯盖的外部借由一固定座盖合一气囊， 使该气囊面临该模 塑杯盖的外部轮廓， 该气囊有一进气口伸出该固定座； 该模塑杯盖的内部容设 入一内模， 其中间更容设一顶料块， 该内模及顶料块与该模塑杯盖的轮廓相搭 配，该内模上对应于该模塑杯盖预备成型出倒钩槽之处具有一环内凹的承接槽； 制造时由该固定座带着气囊盖合于该模塑杯盖外部， 且使该内模与顶料块自该 模塑杯盖的内部闭模， 然后将高压气体经由进气口送入该气囊内， 使该气囊完 全膨胀， 并填塞住模塑杯盖与气囊间的所有空间， 并且高压气体的力量推使该 模塑杯盖的表面变形縮入该内模的承接槽内，因此而成形出一道环状的倒钩槽。
8. 根据权利要求 7所述的植物纤维模塑杯盖倒钩槽之制造方法，其特征在 于： 在该模塑杯盖的表面上成形出一道环状的倒钩槽后， 接着将气囊内的高压 气体泄出， 使气囊的表面与模塑杯盖的外部脱离， 且内模也向闭模时的反方向 开模， 并由该顶料块将已具倒钩槽的模塑杯盖顶出， 即完成一成品。
9. 根据权利要求 7所述的植物纤维模塑杯盖倒钩槽之制造方法，其特征在 于： 对该气囊的进气， 气压在 0. 6-0. 8MPa，充气时间在 3秒左右。
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